Journal
MOLECULAR PHYLOGENETICS AND EVOLUTION
Volume 35, Issue 3, Pages 595-601Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2005.03.012
Keywords
AFLP; internal transcribed spacer; mangrove; natural hybridization; Sonneratia; speciation
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The possible hybrid origin of new species can usually be corroborated by molecular means. Here, we suggest that the segregation patterns of the molecular markers be further analyzed. A true hybrid species should show the patterns under continuous breeding among its members, at least beyond the F2 generation. We applied the guidelines to the putative hybrid species of Sonneratia, a widespread mangrove genus, and concluded that all the observed hybrids in this genus are simple F1's. Thus, S. x gulngai and S. x hainanensis are not true hybrid species. The segregation patterns of molecular markers should be heeded in interpreting the existence of hybrid species. (c) 2005 Elsevier Inc. All rights reserved.
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